#include <stdio.h>
extern void sort(int *a);
int main()
{
	int a[6]={66,11,44,33,55,22};
	printf("before: ");
	for(int i=0;i<6;i++)
	{
		printf("%d ",a[i]);
	}
	sort(a);
	printf("\nsort:   ");
	for(int i=0;i<6;i++)
	{
		printf("%d ",a[i]);
	}
	printf("\n");
	return 0;
}

